vercel__workflow/docs/components/ui/accordion.tsx

'use client';

import { ChevronDownIcon } from 'lucide-react';
import { Accordion as AccordionPrimitive } from 'radix-ui';
import type * as React from 'react';
import { useEffect, useRef } from 'react';

import { cn } from '@/lib/utils';

function Accordion({
  ...props
}: React.ComponentProps<typeof AccordionPrimitive.Root>) {
  const ref = useRef<HTMLDivElement | null>(null);

  useEffect(() => {
    const syncHashTarget = () => {
      const hash = window.location.hash.slice(1);
      if (!hash || !ref.current) return;

      const target = document.getElementById(decodeURIComponent(hash));
      if (!target || !ref.current.contains(target)) return;

      const item = target.closest<HTMLElement>('[data-slot="accordion-item"]');
      const trigger = item?.querySelector<HTMLElement>(
        '[data-slot="accordion-trigger"]'
      );

      if (item?.dataset.state !== 'open') {
        trigger?.click();
      }

      requestAnimationFrame(() => {
        target.scrollIntoView({ block: 'start' });
      });
    };

    syncHashTarget();
    window.addEventListener('hashchange', syncHashTarget);
    return () => {
      window.removeEventListener('hashchange', syncHashTarget);
    };
  }, []);

  return <AccordionPrimitive.Root data-slot="accordion" ref={ref} {...props} />;
}

function AccordionItem({
  className,
  ...props
}: React.ComponentProps<typeof AccordionPrimitive.Item>) {
  return (
    <AccordionPrimitive.Item
      data-slot="accordion-item"
      className={cn('border-b last:border-b-0', className)}
      {...props}
    />
  );
}

function AccordionTrigger({
  className,
  children,
  ...props
}: React.ComponentProps<typeof AccordionPrimitive.Trigger>) {
  return (
    <AccordionPrimitive.Header className="flex">
      <AccordionPrimitive.Trigger
        data-slot="accordion-trigger"
        className={cn(
          'focus-visible:border-ring focus-visible:ring-ring/50 flex flex-1 items-start justify-between gap-4 rounded-md py-4 text-left text-sm font-medium transition-all outline-none hover:underline focus-visible:ring-[3px] disabled:pointer-events-none disabled:opacity-50 [&[data-state=open]>svg]:rotate-180',
          className
        )}
        {...props}
      >
        {children}
        <ChevronDownIcon className="text-muted-foreground pointer-events-none size-4 shrink-0 translate-y-0.5 transition-transform duration-200" />
      </AccordionPrimitive.Trigger>
    </AccordionPrimitive.Header>
  );
}

function AccordionContent({
  className,
  children,
  ...props
}: React.ComponentProps<typeof AccordionPrimitive.Content>) {
  return (
    <AccordionPrimitive.Content
      data-slot="accordion-content"
      className="data-[state=closed]:animate-accordion-up data-[state=open]:animate-accordion-down overflow-hidden text-sm"
      {...props}
    >
      <div className={cn('pt-0 pb-4', className)}>{children}</div>
    </AccordionPrimitive.Content>
  );
}

export { Accordion, AccordionItem, AccordionTrigger, AccordionContent };